A foaming device for producing an automobile seat headrest

Abstract

The utility model relates to headrest foaming technical field, concretely is a kind of foaming device for car seat headrest production, including foaming forming gun head and foaming forming pipe, foaming forming gun head inside sliding is equipped with foaming cleaning piston, the top of foaming forming gun head is fixedly provided with cylinder, the elongated end of cylinder is fixedly provided with driving plate, one side of foaming forming gun head is equipped with foaming cleaning assembly for swinging wiping foaming cleaning piston;By setting foaming cleaning assembly, trigger component and buffer component, after foaming cleaning piston is in place, the swing of swing plate around rotation axis is driven by the remaining stroke of cylinder, drives foaming agent cleaning piece to wipe foaming cleaning piston end;Meanwhile, by the cooperation of wave trough and slide pin, foaming agent cleaning piece can reciprocating swing, improve wiping effect;After wiping, by the cooperation of second inclined groove and slide pin, baffle is moved to pipe opening to shield, avoid dust and other impurities when idle into foaming forming pipe.

Description

Technical Field

[0001] This utility model relates to the field of headrest foaming technology, and in particular to a foaming device for the production of automotive seat headrests. Background Technology

[0002] The internal filling of car seat headrests is mostly prepared using polyurethane closed-mold foaming process. The supporting foaming equipment is mainly divided into two categories: low-pressure foaming equipment and high-pressure foaming equipment. Among them, the high-pressure foaming machine relies on the high-speed collision of two high-pressure raw material jets A and B to form strong turbulence, so as to achieve rapid homogeneous mixing of the two components. The material mixing effect is excellent and the foam molding is stable, making it the mainstream choice for automated headrest production lines. The core component of a high-pressure foaming machine is the mixing nozzle. The industry generally uses an L-shaped mixing nozzle. Its working principle is as follows: after the casting is triggered, two streams of material collide and mix at high speed in the impact chamber through a hard alloy nozzle. The mixed material is injected into the mold along the L-shaped flow channel. After casting is completed, the residual material in the chamber is mechanically scraped off by the built-in cleaning piston to achieve solvent-free self-cleaning.

[0003] A dual-density foaming molding gun head disclosed in Chinese Patent Publication No. CN222832223U, by setting two mixing mechanisms, can adapt to two foaming components of different densities, realize rapid switching of different spraying conditions, meet complex process requirements, and improve production efficiency. However, according to the foaming devices for automotive seat headrests and existing foaming devices provided in related fields, after the cleaning piston of the traditional foaming device cleans the gun head, some foaming material remains on the piston end face, which can easily retract into the gun head with the piston, affecting the cleaning effect. At the same time, when the gun head is idle for a long time, the nozzle is exposed to the air, which can easily allow dust and other impurities to enter and contaminate the subsequent foaming materials. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a foaming device for the production of automotive seat headrests.

[0005] The objective of this utility model is achieved through the following technical solution: a foaming device for producing automotive seat headrests, comprising a foaming gun head and a foaming tube, wherein a foaming cleaning piston is slidably disposed inside the foaming gun head, a cylinder is fixedly disposed on the top of the foaming gun head, a drive plate for pushing the foaming cleaning piston to slide is fixedly disposed on the extended end of the cylinder, a foaming cleaning component for swinging and wiping the foaming cleaning piston is disposed on one side of the foaming gun head, a trigger component for causing the foaming cleaning component to swing is disposed at the bottom of the drive plate, and a buffer component for reserving a trigger stroke for the trigger component is disposed on the top of the foaming cleaning piston; the foaming cleaning component includes a rotating shaft rotatably mounted on one side of the foaming gun head, a swing plate is fixedly disposed near the outlet of the foaming tube, a foaming agent cleaning component is disposed on the top of the swing plate, and a baffle is fixedly disposed on one side of the swing plate located at the foaming agent cleaning component.

[0006] Preferably, the triggering component includes a travel sleeve fixed to the bottom of the drive plate, the upper end of the rotating shaft is movably installed inside the travel sleeve, a sliding pin is provided through and fixed to the top of the rotating shaft, the sliding pin is arranged radially along the rotating shaft, and the travel sleeve has travel grooves at both ends corresponding to the sliding pin.

[0007] Preferably, the buffer assembly includes a sliding sleeve fixed to the top of the foaming cleaning piston, the sliding sleeve having a spring inside, a limiting plate slidably disposed on the top of the spring, a telescopic rod fixedly disposed on the top of the limiting plate, and the top of the telescopic rod being fixed to the bottom of the drive plate.

[0008] Preferably, the travel groove includes a vertical groove formed on the outer surface of the travel sleeve, the top of the vertical groove is provided with a first inclined groove, the top of the first inclined groove is provided with a wave groove, and the top of the wave groove is provided with a second inclined groove.

[0009] Preferably, the bottom edge of the foamed tube is rounded, and the top surface of the baffle is flush with the bottom surface of the foamed tube.

[0010] Preferably, the top surface of the foaming agent cleaning component is higher than the bottom surface of the foaming molding tube, and the foaming agent cleaning component is snap-fitted to the swing plate.

[0011] Preferably, a connecting plate is fixedly provided on the top of the foaming molding gun head, and a protective cover is fixedly provided on the outside of the cylinder.

[0012] The beneficial effects of the foaming device used in the production of this car seat headrest are as follows: By setting up a foaming cleaning component, a triggering component, and a buffering component, after the foaming cleaning piston is in position, the remaining stroke of the cylinder drives the swing plate to swing around the rotating shaft, which drives the foaming agent cleaning component to wipe the end of the foaming cleaning piston and remove residual material. At the same time, the cooperation between the wave groove and the sliding pin enables the foaming agent cleaning component to swing back and forth, improving the wiping effect and ensuring the cleanliness of the foaming cleaning piston. After wiping, the cooperation between the second inclined groove and the sliding pin enables the swing plate to continue swinging, moving the baffle to the pipe opening for blocking, preventing dust and other impurities from entering the foaming molding tube when idle. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation of the protective cover of this utility model; Figure 3 This is a schematic diagram of the assembly of the foaming cleaning piston and the foaming molding gun head of this utility model; Figure 4 This is a schematic diagram of the structure of the buffer assembly of this utility model; Figure 5 This is an assembly diagram of the foaming cleaning component and the triggering component of this utility model; Figure 6 This is a schematic diagram of the first state of the foaming cleaning component of this utility model; Figure 7 This is a schematic diagram of the second state of the foaming cleaning component of this utility model; Figure 8 This is a schematic diagram of the third state of the foaming cleaning component of this utility model.

[0015] In the diagram: 1. Foaming gun head; 2. Foaming tube; 3. Foaming cleaning piston; 4. Cylinder; 5. Buffer assembly; 51. Sliding sleeve; 52. Spring; 53. Telescopic rod; 54. Limiting plate; 6. Foaming cleaning assembly; 61. Rotating shaft; 62. Swing plate; 63. Foaming agent cleaning component; 64. Baffle; 7. Trigger assembly; 71. Stroke sleeve; 72. Sliding pin; 73. Stroke groove; 731. Vertical groove; 732. First inclined groove; 733. Wave groove; 734. Second inclined groove; 8. Protective cover; 9. Connecting plate; 10. Drive plate. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0018] like Figures 1 to 8 As shown, a foaming device for producing car seat headrests includes a foaming gun head 1, a foaming tube 2 fixedly installed at the bottom of the foaming gun head 1, a foaming cleaning piston 3 slidably disposed inside the foaming gun head 1, a cylinder 4 fixedly disposed at the top of the foaming gun head 1, a drive plate 10 for pushing the foaming cleaning piston 3 to slide fixedly disposed at the extended end of the cylinder 4, a foaming cleaning component 6 for swinging and wiping the foaming cleaning piston 3 disposed on one side of the foaming gun head 1, a trigger component 7 for causing the foaming cleaning component 6 to swing at the bottom of the drive plate 10, a buffer component 5 for reserving a trigger stroke for the trigger component 7 disposed at the top of the foaming cleaning piston 3, a connecting plate 9 fixedly disposed at the top of the foaming gun head 1, and a protective cover 8 fixedly disposed on the outside of the cylinder 4 of the foaming gun head 1. The foaming gun head 1 is mounted on the follower arm of the foaming host via the connecting plate 9. During operation, the foaming host pumps material A and material B into the foaming gun head 1 through the feed pipes on both sides. The two materials are ejected through the alloy nozzle inside the foaming gun head 1 and collide and mix at high speed in the impact chamber. The mixed material enters the foaming tube 2 along the L-shaped flow channel and is ejected at high speed along the foaming tube 2, injected into the mold of the car seat headrest for foaming. After the foaming operation is completed, the cylinder 4 shortens, driving the drive plate 10 to move downwards. The buffer component 5 pushes the foaming cleaning piston 3 downward, pushing out the remaining material inside the foaming molding gun head 1 and the foaming molding tube 2. During this process, the drive plate 10 drives the trigger component 7 to move synchronously. When the bottom of the foaming cleaning piston 3 is flush with the outlet of the foaming molding tube 2, the foaming cleaning piston 3 cannot move downward. The drive plate 10 starts to compress the buffer component 5, and at the same time, the trigger component 7 starts to control the foaming cleaning component 6 to swing, wiping the foaming cleaning piston 3 and wiping away the material remaining at its bottom to ensure the cleanliness of the foaming cleaning piston 3.

[0019] like Figure 1 and Figure 5 As shown, the foaming cleaning assembly 6 includes a rotating shaft 61 rotatably mounted on one side of the foaming gun head 1. A swing plate 62 is fixedly provided on the rotating shaft 61 near the outlet of the foaming tube 2. A foaming agent cleaning component 63 is provided on the top of the swing plate 62. A baffle 64 is fixedly provided on one side of the swing plate 62 and the foaming agent cleaning component 63. The top surface of the baffle 64 is flush with the bottom surface of the foaming tube 2. The foaming agent cleaning component 63 is a sponge. The top surface of the foaming agent cleaning component 63 is higher than the bottom surface of the foaming tube 2. The bottom edge of the foaming tube 2 is rounded to guide the foaming agent cleaning component 63 and the baffle 64 to align with the tube opening. The foaming agent cleaning component 63 is snapped to the swing plate 62, allowing the foaming agent cleaning component 63 to be replaced. The rotating shaft 61 is connected to the foaming gun head 1 by a tapered roller bearing. When the bottom of the foaming cleaning piston 3 is flush with the outlet of the foaming molding tube 2, the swing plate 62 rotates around the rotating shaft 61, and the foaming agent cleaning part 63 is rotated to the bottom of the foaming molding tube 2 to contact the foaming cleaning piston 3. The bottom of the foaming cleaning piston 3 is wiped to remove the material remaining on the bottom. Then the swing plate 62 is rotated to the bottom of the foaming molding tube 2 to block the outlet of the foaming molding tube 2 and prevent dust and other impurities from entering the foaming molding tube 2 when it is not in use.

[0020] like Figures 5 to 8 As shown, the trigger assembly 7 includes a travel sleeve 71 fixed to the bottom of the drive plate 10, the upper end of the rotating shaft 61 is movably installed inside the travel sleeve 71, the top of the rotating shaft 61 is provided with a sliding pin 72 through and fixedly provided, the sliding pin 72 is arranged radially along the rotating shaft 61, and the travel sleeve 71 is provided with travel grooves 73 at both ends corresponding to the sliding pin 72. The travel groove 73 includes a vertical groove 731 formed on the outer surface of the travel sleeve 71, a first inclined groove 732 provided at the top of the vertical groove 731, a wave groove 733 provided at the top of the first inclined groove 732, and a second inclined groove 734 provided at the top of the wave groove 733. When cylinder 4 controls drive plate 10 to move downward, drive plate 10 drives stroke sleeve 71 to move downward synchronously. During the downward movement of foaming cleaning piston 3, sliding pin 72 moves along vertical groove 731, and rotating shaft 61 does not rotate. When the bottom of foaming cleaning piston 3 is flush with the outlet of foaming forming tube 2, the first inclined groove 732 moves to the position of sliding pin 72 and begins to push sliding pin 72 to drive rotating shaft 61 to rotate. Rotating shaft 61 then drives bottom swing plate 62 to swing around the axis. When the bottom of wave groove 733 moves to the position of sliding pin 72, foaming agent cleaning part 63 and foaming agent cleaning part 62 move together. Corresponding to the molded tube 2, the wave groove 733 pushes the sliding pin 72 to drive the rotating shaft 61 to rotate back and forth, causing the swing plate 62 to drive the foaming agent cleaning component 63 to swing back and forth, wiping the foaming cleaning piston 3. When the bottom of the second inclined groove 734 moves to the position of the sliding pin 72, the rotating shaft 61 stops rotating back and forth. The second inclined groove 734 pushes the sliding pin 72 to drive the rotating shaft 61 to continue rotating, moving the baffle 64 on the swing plate 62 to the bottom of the foaming molding tube 2, blocking the outlet of the foaming molding tube 2, and preventing dust and other impurities from entering the foaming molding tube 2 when idle.

[0021] like Figure 1 , Figure 4 and Figure 5 As shown, the buffer assembly 5 includes a sliding sleeve 51 fixed to the top of the foaming cleaning piston 3. A spring 52 is provided inside the sliding sleeve 51. A limiting plate 54 is slidably provided on the top of the sliding sleeve 51 at the top of the spring 52. A telescopic rod 53 is fixedly provided on the top of the limiting plate 54. The top of the telescopic rod 53 is fixed to the bottom of the drive plate 10. When the foaming cleaning piston 3 moves to its position, the drive plate 10 continues to move, which will push the telescopic rod 53 to drive the limit plate 54 to compress the spring 52, so that the telescopic rod 53 retracts into the sliding sleeve 51, reserving the trigger stroke for the trigger assembly 7.

[0022] The work process is as follows: S1: As Figure 1 As shown, during operation, the foaming host pumps material A and material B into the foaming gun head 1 through the feed pipes on both sides. The two materials are sprayed out through the alloy nozzle inside the foaming gun head 1 and collide and mix at high speed in the impact chamber. The mixed material enters the foaming tube 2 along the L-shaped flow channel and is sprayed out at high speed along the foaming tube 2, and injected into the mold of the car seat headrest for foaming operation. S2: As Figure 1 and Figure 3 As shown, after the foaming operation is completed, the cylinder 4 shortens, driving the drive plate 10 to move downward. The drive plate 10 then pushes the foam cleaning piston 3 downward through the buffer assembly 5, pushing out the remaining material inside the foaming gun head 1 and the foaming tube 2. S3: As Figure 1 and Figure 5As shown, during the downward movement of the foaming cleaning piston 3, the drive plate 10 drives the stroke sleeve 71 to move downward synchronously, the sliding pin 72 moves along the vertical groove 731, and the rotating shaft 61 does not rotate. S4: As Figure 5 and Figure 6 As shown, when the bottom of the foaming cleaning piston 3 is flush with the outlet of the foaming molding tube 2, the foaming cleaning piston 3 reaches its maximum stroke and cannot continue to move. The drive plate 10 continues to move and pushes the telescopic rod 53 to drive the limit plate 54 to compress the spring 52, so that the telescopic rod 53 retracts into the sliding sleeve 51. At the same time, the first inclined groove 732 moves to the position of the sliding pin 72 and begins to push the sliding pin 72 to drive the rotating shaft 61 to rotate. The rotating shaft 61 then drives the bottom swing plate 62 to swing around the axis. S5: As Figures 5 to 7 As shown, when the bottom of the wave groove 733 moves to the position of the sliding pin 72, the foaming agent cleaning component 63 corresponds to the foaming molding tube 2. Then the wave groove 733 pushes the sliding pin 72 to drive the rotating shaft 61 to rotate back and forth, so that the swing plate 62 drives the foaming agent cleaning component 63 to swing back and forth, wiping the foaming cleaning piston 3. S6: As Figure 5 , Figure 7 and Figure 8 As shown, when the bottom of the second inclined groove 734 moves to the position of the sliding pin 72, the rotating shaft 61 stops reciprocating. The second inclined groove 734 pushes the sliding pin 72 to drive the rotating shaft 61 to continue rotating, moving the baffle 64 on the swing plate 62 to the bottom of the foaming tube 2, blocking the outlet of the foaming tube 2, and preventing dust and other impurities from entering the foaming tube 2 when idle.

[0023] The foaming molding gun head 1, the foaming cleaning piston 3, and the cylinder 4 in this application are known technologies in this field, therefore their specific structures and working principles are not described in detail.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A foaming device for producing automotive seat headrests, comprising a foaming molding gun head (1) and a foaming molding tube (2), wherein a foaming cleaning piston (3) is slidably disposed inside the foaming molding gun head (1), and a cylinder (4) is fixedly disposed on the top of the foaming molding gun head (1), and a drive plate (10) for pushing the foaming cleaning piston (3) to slide is fixedly disposed at the extended end of the cylinder (4), characterized in that: The foaming gun head (1) has a foaming cleaning component (6) on one side for swinging and wiping the foaming cleaning piston (3), the bottom of the drive plate (10) has a trigger component (7) for causing the foaming cleaning component (6) to swing, and the top of the foaming cleaning piston (3) has a buffer component (5) for reserving a trigger stroke for the trigger component (7). The foaming cleaning assembly (6) includes a rotating shaft (61) rotatably mounted on one side of the foaming gun head (1). The rotating shaft (61) is fixedly provided with a swing plate (62) near the outlet of the foaming tube (2). A foaming agent cleaning component (63) is provided on the top of the swing plate (62). A baffle (64) is fixedly provided on one side of the swing plate (62) located on the foaming agent cleaning component (63).

2. The foaming device for producing automotive seat headrests according to claim 1, characterized in that: The triggering component (7) includes a travel sleeve (71) fixed to the bottom of the drive plate (10). The upper end of the rotating shaft (61) is movably installed inside the travel sleeve (71). A sliding pin (72) is provided through and fixed to the top of the rotating shaft (61). The sliding pin (72) is arranged radially along the rotating shaft (61). The travel sleeve (71) has travel grooves (73) at both ends corresponding to the sliding pin (72).

3. The foaming device for producing automotive seat headrests according to claim 2, characterized in that: The buffer assembly (5) includes a sliding sleeve (51) fixed to the top of the foaming cleaning piston (3). A spring (52) is provided inside the sliding sleeve (51). A limiting plate (54) is slidably provided on the top of the sliding sleeve (51) at the top of the spring (52). A telescopic rod (53) is fixed on the top of the limiting plate (54). The top of the telescopic rod (53) is fixed to the bottom of the drive plate (10).

4. The foaming device for producing automotive seat headrests according to claim 2, characterized in that: The travel groove (73) includes a vertical groove (731) formed on the outer surface of the travel sleeve (71), the top of the vertical groove (731) is provided with a first inclined groove (732), the top of the first inclined groove (732) is provided with a wave groove (733), and the top of the wave groove (733) is provided with a second inclined groove (734).

5. The foaming device for producing automotive seat headrests according to claim 1, characterized in that: The bottom edge of the foamed tube (2) is rounded, and the top surface of the baffle (64) is flush with the bottom surface of the foamed tube (2).

6. The foaming device for producing automotive seat headrests according to claim 1, characterized in that: The top surface of the foaming agent cleaning component (63) is higher than the bottom surface of the foaming molding tube (2), and the foaming agent cleaning component (63) is snapped together with the swing plate (62).

7. The foaming device for producing automotive seat headrests according to claim 1, characterized in that: A connecting plate (9) is fixedly provided on the top of the foaming gun head (1), and a protective cover (8) is fixedly provided on the outside of the cylinder (4) of the foaming gun head (1).

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